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84 lines
1.7 KiB
Markdown
84 lines
1.7 KiB
Markdown
---
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id: 69cfca90e8a0a6d4d6871c4f
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title: "Challenge 265: Deepest Brackets"
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challengeType: 28
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dashedName: challenge-265
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---
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# --description--
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Given a string containing balanced brackets, return the content of the deepest nested brackets.
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- Brackets can be any of the three types: `()`, `[]`, and `{}`.
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- The input will always have a single deepest group.
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For example, given `"(hello (world))"`, return `"world"`.
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# --hints--
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`getDeepestBrackets("(hello (world))")` should return `"world"`.
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```js
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assert.equal(getDeepestBrackets("(hello (world))"), "world");
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```
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`getDeepestBrackets("[outer [inner] outer]")` should return `"inner"`.
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```js
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assert.equal(getDeepestBrackets("[outer [inner] outer]"), "inner");
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```
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`getDeepestBrackets("{a{b}c{d{e}f}g}")` should return `"e"`.
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```js
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assert.equal(getDeepestBrackets("{a{b}c{d{e}f}g}"), "e");
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```
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`getDeepestBrackets("[the {quick (brown [fox] jumped) over (the) lazy} dog]")` should return `"fox"`.
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```js
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assert.equal(getDeepestBrackets("[the {quick (brown [fox] jumped) over (the) lazy} dog]"), "fox");
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```
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`getDeepestBrackets("f[(r)e{e}C{o[(d){e(C)}a]m}]p")` should return `"C"`.
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```js
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assert.equal(getDeepestBrackets("f[(r)e{e}C{o[(d){e(C)}a]m}]p"), "C");
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```
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# --seed--
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## --seed-contents--
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```js
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function getDeepestBrackets(str) {
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return str;
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}
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```
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# --solutions--
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```js
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function getDeepestBrackets(str) {
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let maxDepth = 0, depth = 0, content = '';
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let start = 0;
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for (let i = 0; i < str.length; i++) {
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if ('([{'.includes(str[i])) {
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depth++;
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if (depth > maxDepth) {
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maxDepth = depth;
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start = i + 1;
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}
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} else if (')]}'.includes(str[i])) {
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if (depth === maxDepth) {
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content = str.slice(start, i);
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}
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depth--;
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}
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}
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return content;
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}
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```
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